What is Biodiversity?

Biodiversity is the variability among all living organisms, from the microscopic to the visible, and the ecological network of which they are part; this  includes diversity within species, between species and of ecosystems.  This interdependence of all living things, including humans, supports life on earth.  Human well-being and the survival of all species are intimately linked to healthy ecosystems. Every species in decline demonstrates how important the links of biodiversity and the ecosystems that sustain us are.